A portion of the Interstate 5 bridge is submerged after it collapsed into the Skagit River dumping vehicles and people into the water in Mount Vernon, Wash., Thursday, May 23, 2013 according to the Washington State Patrol. less

A portion of the Interstate 5 bridge is submerged after it collapsed into the Skagit River dumping vehicles and people into the water in Mount Vernon, Wash., Thursday, May 23, 2013 according to the Washington ... more

Photo: Frank Varga, Associated Press

A portion of the Interstate 5 bridge is submerged after it... Photo-4678979.63157 - Houston Chronicle

Washington State Governor Jay Inslee addresses the media at the scene of a bridge collapse into the Skagit River on Interstate 5 on May 23, 2013 near Mt. Vernon, Washington. People and cars were thrown into the river when the four-lane bridge collapsed. At least three people were rescued from the water but there have been no reported deaths. Police are investigating witnesses reports that a semi-truck may have struck the bridge causing the collapse. less

Washington State Governor Jay Inslee addresses the media at the scene of a bridge collapse into the Skagit River on Interstate 5 on May 23, 2013 near Mt. Vernon, Washington. People and cars were thrown into the ... more

In this photo provided by Francisco Rodriguez, a man is seen sitting atop a car that fell into the Skagit River after the collapse of the Interstate 5 bridge there minutes earlier Thursday, May 23, 2013, in Mount Vernon, Wash. less

In this photo provided by Francisco Rodriguez, a man is seen sitting atop a car that fell into the Skagit River after the collapse of the Interstate 5 bridge there minutes earlier Thursday, May 23, 2013, in ... more

Photo: Francisco Rodriguez, Associated Press

In this photo provided by Francisco Rodriguez, a man is seen... Photo-4678989.63157 - Houston Chronicle

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Taboola Gallery Frame Item-85307.63157 - Houston Chronicle

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In this photo provided by Francisco Rodriguez, rescue workers form a human chain as they begin to remove a woman who reaches out from a smashed pickup truck that fell into the Skagit River after the collapse of the Interstate 5 bridgeThursday, May 23, 2013, in Mount Vernon, Wash. less

In this photo provided by Francisco Rodriguez, rescue workers form a human chain as they begin to remove a woman who reaches out from a smashed pickup truck that fell into the Skagit River after the collapse of ... more

Rescue workers look for victims after a portion of the Interstate 5 bridge collapsed into the Skagit River in Mount Vernon, Wash., Thursday, May 23, 2013.

Rescue workers look for victims after a portion of the Interstate 5 bridge collapsed into the Skagit River in Mount Vernon, Wash., Thursday, May 23, 2013.

Photo: Jennifer Buchanan, Associated Press

Rescue workers look for victims after a portion of the Interstate 5... Photo-4678991.63157 - Houston Chronicle

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Rescue workers look for victims after a portion of the Interstate 5 bridge collapsed into the Skagit River in Mount Vernon, Wash., Thursday, May 23, 2013.

Rescue workers look for victims after a portion of the Interstate 5 bridge collapsed into the Skagit River in Mount Vernon, Wash., Thursday, May 23, 2013.

Photo: Jennifer Buchanan, Associated Press

Rescue workers look for victims after a portion of the Interstate 5... Photo-4678992.63157 - Houston Chronicle

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Washington Governor Jay Inslee, right, talks to reporters about the failure of the Interstate highway bridge crossing the Skagit River in Mt. Vernon Thursday May 23, 2013, dumping two vehicles into the water and sparking a rescue effort by boats and divers as three injured people were pulled from the chilly waterway. Early reports indicate this semi trailier may have struck the bridge. less

Washington Governor Jay Inslee, right, talks to reporters about the failure of the Interstate highway bridge crossing the Skagit River in Mt. Vernon Thursday May 23, 2013, dumping two vehicles into the water ... more

In this photo provided by Francisco Rodriguez, a rescue boat approaches the scene where a pickup truck and travel trailer, seen at left, and a car fell into the Skagit River after the collapse of the Interstate 5 bridgeThursday, May 23, 2013, in Mount Vernon, Wash. less

In this photo provided by Francisco Rodriguez, a rescue boat approaches the scene where a pickup truck and travel trailer, seen at left, and a car fell into the Skagit River after the collapse of the Interstate ... more

People stand on the south bank of the Skagit river watching the rescue operation following Interstate-5 bridge partially collapsed into the Skagit river dumping vehicles and people into the water in Mount Vernon, Wash., Thursday, May 23, 2013 according to the Washington State Patrol. less

People stand on the south bank of the Skagit river watching the rescue operation following Interstate-5 bridge partially collapsed into the Skagit river dumping vehicles and people into the water in Mount ... more

Photo: Joe Nicholson, Associated Press

People stand on the south bank of the Skagit river watching the... Photo-4678997.63157 - Houston Chronicle

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People stand on the south bank of the Skagit river watching the rescue operation following Interstate-5 bridge partially collapsed into the Skagit river dumping vehicles and people into the water in Mount Vernon, Wash., Thursday, May 23, 2013 according to the Washington State Patrol. less

People stand on the south bank of the Skagit river watching the rescue operation following Interstate-5 bridge partially collapsed into the Skagit river dumping vehicles and people into the water in Mount ... more

Photo: Joe Nicholson, Associated Press

People stand on the south bank of the Skagit river watching the... Photo-4678998.63157 - Houston Chronicle

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Taboola Gallery Frame Item-85307.63157 - Houston Chronicle

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Rescue workers look over the scene after a portion of the Interstate 5 bridge collapsed into the Skagit River in Mount Vernon, Wash., Thursday, May 23, 2013.

Rescue workers look over the scene after a portion of the Interstate 5 bridge collapsed into the Skagit River in Mount Vernon, Wash., Thursday, May 23, 2013.

Photo: Rick Lund, THE SEATTLE TIMES.

Rescue workers look over the scene after a portion of the... Photo-4678999.63157 - Houston Chronicle

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In this photo provided by Francisco Rodriguez, a rescue boat approaches the scene where a pickup truck and a car fell into the Skagit River after the collapse of the Interstate 5 bridgeThursday, May 23, 2013, in Mount Vernon, Wash. less

In this photo provided by Francisco Rodriguez, a rescue boat approaches the scene where a pickup truck and a car fell into the Skagit River after the collapse of the Interstate 5 bridgeThursday, May 23, 2013, ... more

A rescue boat and divers search near a portion of the Interstate-5 bridge that is submerged after it collapsed into the Skagit river dumping vehicles and people into the water in Mount Vernon, Wash., Thursday, May 23, 2013 according to the Washington State Patrol. less

A rescue boat and divers search near a portion of the Interstate-5 bridge that is submerged after it collapsed into the Skagit river dumping vehicles and people into the water in Mount Vernon, Wash., Thursday, ... more

Photo: Joe Nicholson, Associated Press

A rescue boat and divers search near a portion of the Interstate-5... Photo-4679002.63157 - Houston Chronicle

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A rescue boat and divers search near a portion of the Interstate-5 bridge that is submerged after it collapsed into the Skagit river dumping vehicles and people into the water in Mount Vernon, Wash., Thursday, May 23, 2013 according to the Washington State Patrol. less

A rescue boat and divers search near a portion of the Interstate-5 bridge that is submerged after it collapsed into the Skagit river dumping vehicles and people into the water in Mount Vernon, Wash., Thursday, ... more

Photo: Joe Nicholson, Associated Press

A rescue boat and divers search near a portion of the Interstate-5... Photo-4679003.63157 - Houston Chronicle

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Taboola Gallery Frame Item-85307.63157 - Houston Chronicle

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An Interstate 5 bridge over a Skagit river collapsed north of Seattle Thursday evening May 23, 2013, dumping two vehicles into the water and sparking a rescue effort by boats and divers as three injured people were pulled from the chilly waterway. Early reports indicate this semi trailier may have struck the bridge. less

An Interstate 5 bridge over a Skagit river collapsed north of Seattle Thursday evening May 23, 2013, dumping two vehicles into the water and sparking a rescue effort by boats and divers as three injured people ... more

Photo: DEAN RUTZ, THE SEATTLE TIMES

An Interstate 5 bridge over a Skagit river collapsed north of... Photo-4679004.63157 - Houston Chronicle

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In this photo provided by Francisco Rodriguez, a man is seen sitting atop a car that fell into the Skagit River after the collapse of the Interstate 5 bridge there minutes earlier Thursday, May 23, 2013, in Mount Vernon, Wash. less

In this photo provided by Francisco Rodriguez, a man is seen sitting atop a car that fell into the Skagit River after the collapse of the Interstate 5 bridge there minutes earlier Thursday, May 23, 2013, in ... more

Photo: Francisco Rodriguez, Associated Press

In this photo provided by Francisco Rodriguez, a man is seen... Photo-4679005.63157 - Houston Chronicle

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In this photo provided by Francisco Rodriguez, one man is seen sitting atop a car that fell into the Skagit River another stands in the door of his partially submerged pickup truck after the collapse of the Interstate 5 bridge there minutes earlier Thursday, May 23, 2013, in Mount Vernon, Wash. less

In this photo provided by Francisco Rodriguez, one man is seen sitting atop a car that fell into the Skagit River another stands in the door of his partially submerged pickup truck after the collapse of the ... more

Photo: Francisco Rodriguez, Associated Press

In this photo provided by Francisco Rodriguez, one man is seen... Photo-4679006.63157 - Houston Chronicle

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A portion of the Interstate 5 bridge is submerged after it collapsed into the Skagit River dumping vehicles and people into the water in Mount Vernon,

A portion of the Interstate 5 bridge is submerged after it collapsed into the Skagit River dumping vehicles and people into the water in Mount Vernon,

Photo: Rick Lund, AP Photo/The Seattle Times

A portion of the Interstate 5 bridge is submerged after it... Photo-4679007.63157 - Houston Chronicle

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Taboola Gallery Frame Item-85307.63157 - Houston Chronicle

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A portion of the Interstate 5 bridge is submerged after it collapsed into the Skagit River dumping vehicles and people into the water in Mount Vernon, Wash., Thursday, May 23, 2013.

A portion of the Interstate 5 bridge is submerged after it collapsed into the Skagit River dumping vehicles and people into the water in Mount Vernon, Wash., Thursday, May 23, 2013.

Photo: Rick Lund, Associated Press

A portion of the Interstate 5 bridge is submerged after it... Photo-4679009.63157 - Houston Chronicle

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An unidentified man waits on his submerged vehicle in the Skagit River Thursday May 23, 2012. The Interstate 5 bridge over the Skagit river collapsed north of Seattle Thursday evening, dumping two vehicles into the water and sparking a rescue effort by boats and divers as three injured people were pulled from the chilly waterway. less

An unidentified man waits on his submerged vehicle in the Skagit River Thursday May 23, 2012. The Interstate 5 bridge over the Skagit river collapsed north of Seattle Thursday evening, dumping two vehicles into ... more

Photo: Frank Varga, Associated Press

An unidentified man waits on his submerged vehicle in the Skagit... Photo-4679010.63157 - Houston Chronicle

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In this photo provided by Francisco Rodriguez, the scene were the Interstate 5 bridge collapsed into the Skagit River is seen at dusk Thursday, May 23, 2013, in Mount Vernon, Wash.

In this photo provided by Francisco Rodriguez, the scene were the Interstate 5 bridge collapsed into the Skagit River is seen at dusk Thursday, May 23, 2013, in Mount Vernon, Wash.

Photo: Francisco Rodriguez, Associated Press

In this photo provided by Francisco Rodriguez, the scene were the... Photo-4679011.63157 - Houston Chronicle

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In this photo provided by Francisco Rodriguez, rescue workers surround the scene where a pickup truck and a car fell into the Skagit River after the collapse of the Interstate 5 bridgeThursday, May 23, 2013, in Mount Vernon, Wash. less

In this photo provided by Francisco Rodriguez, rescue workers surround the scene where a pickup truck and a car fell into the Skagit River after the collapse of the Interstate 5 bridgeThursday, May 23, 2013, in ... more

Wayne and Bernice James of California camp out in a Home Depot parking lot after an Interstate 5 bridge collapsed over the Skagit River between Mt. Vernon and Burlington on Thursday, May 23, 2013. Two cars and one travel trailer went in the water. There were no known fatalities. The couple hoped to wait out the traffic nightmare created by the bridge collapse. Officials worried that surface streets would be difficult to navigate on the upcoming holiday weekend. less

Wayne and Bernice James of California camp out in a Home Depot parking lot after an Interstate 5 bridge collapsed over the Skagit River between Mt. Vernon and Burlington on Thursday, May 23, 2013. Two cars and ... more

Photo: Joshua Trujillo, Seattlepi.com

Wayne and Bernice James of California camp out in a Home Depot... Photo-4679013.63157 - Houston Chronicle

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A police officer walks along the bank near the collapsed Interstate-5 bridge submerged after collapsing into the Skagit River, dumping vehicles and people into the water, in Mount Vernon, Wash., Thursday, May 23, 2013. less

A police officer walks along the bank near the collapsed Interstate-5 bridge submerged after collapsing into the Skagit River, dumping vehicles and people into the water, in Mount Vernon, Wash., Thursday, May ... more

Photo: Elaine Thompson, Associated Press

A police officer walks along the bank near the collapsed... Photo-4679014.63157 - Houston Chronicle

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People offer spontaneous prayer after an Interstate 5 bridge collapsed over the Skagit River between Mt. Vernon and Burlington, Wash. on Thursday, May 23, 2013. Two cars and one travel trailer went in the water. There were no know fatalities. less

People offer spontaneous prayer after an Interstate 5 bridge collapsed over the Skagit River between Mt. Vernon and Burlington, Wash. on Thursday, May 23, 2013. Two cars and one travel trailer went in the ... more

A person is removed from the wreckage of the collapsed Interstate-5 bridge in Mount Vernon, Wash. Thursday May 23, 2012. The Interstate 5 bridge over the Skagit river collapsed north of Seattle Thursday evening, dumping two vehicles into the water and sparking a rescue effort by boats and divers as three injured people were pulled from the chilly waterway. less

A person is removed from the wreckage of the collapsed Interstate-5 bridge in Mount Vernon, Wash. Thursday May 23, 2012. The Interstate 5 bridge over the Skagit river collapsed north of Seattle Thursday ... more

Photo: Frank Varga, Associated Press

A person is removed from the wreckage of the collapsed Interstate-5... Photo-4679016.63157 - Houston Chronicle